Cooling in our trailer

For around 3 weeks, Donny plus his husband have stored their shed in our backyard, and all of us do not mind; our space is not used often; I am not a shed expert, but I recognize that their trailer is pretty decent, but they use it mainly for storing flowers unit plus tools. At first, they never truly used the shed. It just sat in our lawn. Then, a few weeks ago, Donny told me that they were planning on putting couches in the shed, so they could take it to the house at a later date. I was quite not sure. The sheds has no lights, no air conditioner, plus no ventilation, however how could they be planning to use it for the house? Yeah, though, they had it all figured out. The third day, they showed up with an air conditioner component that they were going to install in the shed. I have no idea what kind of air conditioner component it was, but apparently, it gave ideal air cooling, heating, plus ventilation. The air conditioner component did not use any HVAC ductwork, plus it just sat on top of the roof of the shed. I was flummoxed that it genuinely was working nice! I had never heard of setting up an air conditioner, or any sort of Heating as well as A/C, in a shed! The next thing they are doing is fully set it plus putting in shelving units, however of course, the shed does not have indoor water, but I recognize if you are staying on a campground that provides water, that is not an issue.

a/c worker